From e7859c3ee45e8bce64fbe24b3c8444a03453f4f3 Mon Sep 17 00:00:00 2001
From: Vladimir Still <vladimir.still@intel.com>
Date: Fri, 3 Nov 2023 05:29:23 -0700
Subject: [PATCH] Avoid null dereference in Visitor::findContext for visitor
 without context

found by clang-tidy
---
 ir/visitor.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ir/visitor.h b/ir/visitor.h
index aa183a6ca62..83288ca1ff4 100644
--- a/ir/visitor.h
+++ b/ir/visitor.h
@@ -245,6 +245,7 @@ class Visitor {
     template <class T>
     inline const T *findContext(const Context *&c) const {
         if (!c) c = ctxt;
+        if (!c) return nullptr;
         while ((c = c->parent))
             if (auto *rv = dynamic_cast<const T *>(c->node)) return rv;
         return nullptr;
@@ -257,6 +258,7 @@ class Visitor {
     template <class T>
     inline const T *findOrigCtxt(const Context *&c) const {
         if (!c) c = ctxt;
+        if (!c) return nullptr;
         while ((c = c->parent))
             if (auto *rv = dynamic_cast<const T *>(c->original)) return rv;
         return nullptr;